.clearfix::after {
  content: '';
  display: block;
  clear: both;
  height: 0;
  visibility: hidden;
  overflow: hidden;
}
input::placeholder {
  font-size: 12px;
  color: #bbb;
}

hr {
  margin: 0 0 10px 0;
}
.example {
  min-height: 30px;
  padding: 15px 5px;
  border: 2px dashed #c1c1c1;
  overflow: hidden;
  margin-bottom: 10px;
  border-radius: 8px;
}

.smallexample {
  border-radius: 5px;
  min-height: 20px;
  padding: 5px 2px;
  border: 1px dashed lightblue;
  overflow: hidden;
  margin-bottom: 5px;
}
.point {
  color: hotpink;
}
